From: Mathias Krause <minipli@grsecurity.net>
To: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Mathias Krause <minipli@grsecurity.net>
Subject: [PATCH 3/5] KVM: Shrink struct kvm_mmu_memory_cache
Date: Mon, 13 Feb 2023 17:33:49 +0100 [thread overview]
Message-ID: <20230213163351.30704-4-minipli@grsecurity.net> (raw)
In-Reply-To: <20230213163351.30704-1-minipli@grsecurity.net>
Move the 'capacity' member around to make use of the padding hole on 64
bit systems instead of introducing yet another one.
This allows us to save 8 bytes per instance for 64 bit builds of which,
e.g., x86's struct kvm_vcpu_arch has a few.
Signed-off-by: Mathias Krause <minipli@grsecurity.net>
---
include/linux/kvm_types.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h
index 76de36e56cdf..8e4f8fa31457 100644
--- a/include/linux/kvm_types.h
+++ b/include/linux/kvm_types.h
@@ -92,10 +92,10 @@ struct gfn_to_pfn_cache {
*/
struct kvm_mmu_memory_cache {
int nobjs;
+ int capacity;
gfp_t gfp_zero;
gfp_t gfp_custom;
struct kmem_cache *kmem_cache;
- int capacity;
void **objects;
};
#endif
--
2.39.1
next prev parent reply other threads:[~2023-02-13 16:32 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-13 16:33 [PATCH 0/5] KVM: Put struct kvm_vcpu on a diet Mathias Krause
2023-02-13 16:33 ` [PATCH 1/5] KVM: x86: Shrink struct kvm_pmu Mathias Krause
2023-02-13 16:33 ` [PATCH 2/5] KVM: x86: Shrink struct kvm_queued_exception Mathias Krause
2023-02-18 14:55 ` Tom Lendacky
2023-02-13 16:33 ` Mathias Krause [this message]
2023-02-13 17:08 ` [PATCH 3/5] KVM: Shrink struct kvm_mmu_memory_cache Sean Christopherson
2023-02-14 12:20 ` Mathias Krause
2023-02-13 16:33 ` [PATCH 4/5] KVM: x86: Shrink struct kvm_vcpu_arch Mathias Krause
2023-02-13 16:33 ` [PATCH 5/5] KVM: Shrink struct kvm_vcpu Mathias Krause
2023-02-13 17:05 ` [PATCH 0/5] KVM: Put struct kvm_vcpu on a diet Sean Christopherson
2023-02-14 12:19 ` Mathias Krause
2023-02-16 17:32 ` Sean Christopherson
2023-02-17 16:07 ` Mathias Krause
2023-02-17 16:35 ` Sean Christopherson
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